First, notice that you can get Dark Fantasy Places for free on DTRPG. It is a good introduction to my "dark fantasy" line.
You can also find many free downloads in my public folder. Here are some examples.
* Generic Monsters (5e) - from an old post. Check Teratogenicon for a deeper treatment.
* OPH - One page house rules. Explanation here.
* The Magnificent Shadow. A free one-page scenario, explanation here.
* OSR minimalist - a rough draft of my OSR minimalist house rules. Probably will receive many updates but not become an actual book for a long time. For now, it is only a bunch of lose ideas to play OSR games without looking at tables. In any case, I would love your comments in order to improve it.
I often add beta versions of my games to the folder before publishing. If you want to become a playtester or alpha reader, get in touch!